# 使用“setdefault”方法
vowels = ['a', 'e', 'i', 'o', 'u']
word = input("Provide a word to search for vowels: ")
found = {}

for letter in word:
    if letter in vowels:
        found.setdefault(letter,0) # 使用“setdefault”方法
        found[letter] += 1

for k,v in sorted(found.items()):
    print(k,'was found',v,'time(s).')


# Provide a word to search for vowels: life,the universe,and everything
# a was found 1 time(s).
# e was found 6 time(s).
# i was found 3 time(s).
# u was found 1 time(s).